No Internet After Resuming From Standby

Windows XP

For some reason after I resume from standby mode my Internet connection
is always dead. The "limited or no connectivity" notice pops up and
nothing requiring an Internet connection has access. I am forced to
reboot to get it to work again. So I've started to have to either leave
the computer on or completely shut it off.
Does anyone know anything about the possible reasons for this and how to
fix it?

Open Device Manager, open the properties on your ethernet card, click
the Power tab, and deselect "Allow the computer to turn off this device
to save power". If the internet connection is through a USB port, do
the same thing with all USB Root Hubs.

I have a similar problem. I tried the suggestion about not shutting off power
to the ethernet "Card" during standby, but it did not help. What I have
resorted to is unplugging the LinkSys Router for about 10 seconds, then I plug
it back in. (It has no on/off switch). This is crude, but it beats re-booting.